欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
由于外部荷载和内部材料复杂时变特性的影响,服役结构的性能退化机制复杂。引入具有独立增量特性的Gamma过程来描述结构抗力的单调退化特征,采用Poisson随机过程和Bernoulli随机过程分别描述了结构所受荷载的变化,建立了抗力-荷载双随机过程体系;同时,基于穿越率的观点,提出了基于本文新模型的工程结构性能时变可靠性分析的计算方法,推求了结构时变可靠度表达式。分析表明,本文模型能够较好地描述退化结构随时间的抗力退化规律和荷载随机变化过程,可以为基于时变可靠度理论的结构评估和寿命预测提供理论依据。
英文摘要：
In order to study the deteriorating mechanism of the structure performance,the resistance of deteriorating structures was described by Gamma distribution which has a character of independent increment,the changing process of load was described by Poisson stochastic process and Bernoulli stochastic process respectively,then,the load-resistance double stochastic process system was established.Also,based on the conception of crossing rate,the new time-varying reliability analysis method for the engineering structure performance was put forward and the expression was calculated.Analysis showed that the new stochastic process model can better describe the degradation of resistance and the load variation process with time,so it can provide the theory basis for the evaluation of existing structures based on the time dependent reliability theory as while as the life prediction.
同期刊论文项目
同项目期刊论文
Two-phase flow numerical simulation of a bend-type ice sluice in the diversion water channel of powe
Experimental study on the bed topography evolution in alluvial meandering rivers with various sinuou
Analysis of agricultural pollution by flood flow impact on water quality in a reservoir using a thre
Three-dimensional simulation of the water flow field and the suspended-solids concentration in a cir
Numerical investigation on vortex-induced vibration of an elastically mounted circular cylinder at l
An Integrated Groundwater Management Mode Based on Control Indexes of Groundwater Quantity and Level
Short-term optimal operation of Three-gorge and Gezhouba cascade hydropower stations in non-flood se
Risk identification on hydropower project using the IAHP and extension of TOPSIS methods under inter
The effects of strong motion duration on the dynamic response and accumulated damage of concrete gra
Observation of microscopic damage accumulation in brittle solids subjected to dynamic compressive lo
Laboratory observation of acoustic fluidization in granular fault gouge and implications for dynamic
Laboratory measurements of the rate dependence of the fracture toughness anisotropy of Barre granite
Optimal sensor placement for large structures using the nearest neighbour index and a hybrid swarm i
Joint impact of rainfall and tidal level on flood risk in a coastal city with a complex river networ
Eulerian-Eulerian solid-liquid two-phase flow of sandstone wastewater in a hydropower station rectan
Research on virtual-reality interactive simulation for concrete dam construction process based on ve
Seismic cracking analysis of concrete gravity dams with initial cracks using the extended finite ele
Constructioin Schedule Real-time Control Coupling Consruction Quality in Large Scale Underground Pow
Comprehensive Evaluation of the Coupling Construction Progress and Quality of High Core Rockfill Dam
Joint probability distribution of winds and waves from wave simulation of 20 years (1989-2008) in Bo
Construction Schedules Simulation and Prediction of Water Conveyance Tunnel Based on Karst Geologica
Research on Management Information System for Construction Consultant in Hydropower Project Based on
A Study on the Controllability of Deepwater Manifold during Launch through Pendulous Installation Me
Research on Construction Schedule Real-Time Control of High Core Rock-Fill Dam Based on Digital Moni
Tracking methods for free surface and simulation of a liquid droplet impacting on a solid surface ba
Finite element analysis on thermal upheaval buckling of submarine burial pipelines with initial impe
位置：